add llama2 autoTP support in replace_module#4022
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* add lm_head tensor parallel * fix conflict * add embed_out tp * add llama2 autoTP support in replace_module (deepspeedai#4022) --------- Co-authored-by: Lai, Yejing <yejing.lai@intel.com> Co-authored-by: Dino Chen <zhenhuan.chen@intel.com>
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Problem
After llama2 update in transformers [Llama2] Add support for Llama 2, the autoTP for llama is broken.
Reason
After dig into transformers modification, I noticed that there is another
self.num_key_value_headsattribute in the attention module:https://github.com/huggingface/transformers/pull/24891/files#diff-06392bad3b9e97be9ade60d4ac46f73b6809388f4d507c2ba1384ab872711c51R253
Solution
In DeepSpeed, this part is controlled by a hardcoded name list in
update_mp_paramsof autoTP'sreplace_wo_policy(see this PR's modification). So I added one more key in this list, and the problem is fixed.@tjruwase @jeffra please kindly review, thanks~